Sometimes when you browse a Project offline, you may notice that some page was not loaded because of Level restrictions or other Project settings. Adjusting Project settings and re-downloading it will take much time and may download lots of extra pages that you don't need.
Portable Offline Browser offers a quick way to add the single missing page to the Project. Simply drag the desired link over the Project and drop on it. You will get a small menu that offers either to add the link to the Project or to create a new Project with that URL. If you add the link to the existing Project, it will be immediately downloaded and become available offline.
In the Project Properties, the new URL will be added to the URLs field as a separate line:
SingleURL=http://www.server.com/page.htm
You can also select a portion of the Web page with some links and drop it to the Project. All links in the selection will be added to the Project the same way.